12220011111 has 128 divisors (see below), whose sum is σ = 22078586880. Its totient is φ = 5818521600.

The previous prime is 12220011107. The next prime is 12220011119. The reversal of 12220011111 is 11111002221.

It is not a de Polignac number, because 12220011111 - 2² = 12220011107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220011119) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 33296850 + ... + 33297216.

It is an arithmetic number, because the mean of its divisors is an integer number (172488960).

Almost surely, 2^12220011111 is an apocalyptic number.

12220011111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12220011111 is a deficient number, since it is larger than the sum of its proper divisors (9858575769).

12220011111 is a wasteful number, since it uses less digits than its factorization.

12220011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12220011111 its reverse (11111002221), we get a palindrome (23331013332).

The spelling of 12220011111 in words is "twelve billion, two hundred twenty million, eleven thousand, one hundred eleven".